Class 10 Maths (Basic) (Term 1) Board Exam 2021-22 CBSE Answer Key

CBSE Board Exam 2021-22
  • SUBJECT- English Core
  • Term- I
  • Time allowed- 90 minutes
  • Maximum Marks- 40
  • SECTION-A

       SECTION-A






Q.1 HCF of 92 and 152 is

Ans. 4

Q.2 In triangle ABC, DE parallel to BC,AD+ 4cm, DB + 6 cm, and AE + 5cm. The length of EC is
Ans- 7.5 cm

Q.3 The value of k, for which the pair of linear equations x + y – 4+ 0, 2x = ky – 3+ 0 have no solution is?
Ans- 2

Q.4  The value of (tan2 45* _cos2 60*) is?
Ans- 3/4

Q.5  A point (x,1) is equivalent from (0,0) and (2,0), The value of x is?
Ans- 1

Q.6  Two coins are tossed together, the probability of getting exactly one head is?
Ans- 1/2

Q.7  A circular arc of length 22 cm subtends an angle 0 at the center of the circle of radius 21 cm. The value of 0 is?
Ans- 60 degrees

Q.8  A quadratic polynomial having sum and product of its zeroes as 5 and 0 respectively, is?
Ans- x2 + 5x

Q.9 If P(E) = 0.65, then the value of P(not E) is?

Ans- 0.35

Q.10 It is given that triangle DEF ~ triangle PQR, EF:QR = 3:2, then the value of ar(DEF):ar(PQR) is?
Ans- 9:4

Q.11 Zeroes of a quadratic polynomial x2 – 5x+6 are?
Ans- 2,3

Q.12 57/300 is a?
Ans- terminating decimal expansion after 2 places of decimals

Q.13  Perimeter of a rectangle whose length (l) is 4 cm more than twice its breadth (b) is 14 cm. The pair of linear equations representing the above information is?
Ans- l-b+4, 2(l+b) =`14

Q.14 5.213 can also bne written as?
Ans- 5.213213213…

Q.15  The ratio in which the point ( 4,0) divides the line segment joining the points (4,6) and (4,-8) is

Q.16 Which of the following is not defined?
Ans- tan 90 degree

Q.17  In the given figure, a circle is touching a semi-circle at C and its diameter AB at O. If AB= 28 cm, what is the radius of the inner circle ?
Ans- 7cm

Q.18 The vertices of a triangle QAB are o (0,0), A(4,0), and B (0,6). The median AD is drawn on OB. The length AD is?

Q.19 In a right angle triangle QPR, angle Q =90*, If angle P = 45*, then the value of tan P- cos2 R is?
Ans- 1/2

Q.20  If tan 0=⅔, then the value of sec 0 is
Ans- 13/3

Q.21 The perimeter of the sector of a circle of radius 14cm and central angle 45* is
Ans- 11cm

Q.22 A bad contains 16 red balls, 8 green balls and 6 blue balls, One ball is drawn at random. The probability that it is a blue ball is
Ans- ⅕

Q.23 If sin θ- cos θ = 0, then the value of 0 is
Ans- 45o

Q.24 The probability of happening of an event is 0.02. The probability of not happening of the event is
Ans- 0.98

Q.25 Two concentric circles are centered at O. The area of the shaded region, if outer and inner radii are 14 cm and 7 cm respectively is
Ans- 462 cm

Q.26 1/1 + sinθ + 1/1-sinθ can be simplified to get
Ans-  2 secθ

Q.28 The origin divides the line segment AB joining the points A (1, -3) and B(-3,9) in the ratio 
Ans- 1:1

Q.28 The perpendicular line bisector of a line segment A(-8,0) and B(8,0) passes through a point (0,k). The value of k is

Q.29 Which of the following is the correct statement?
Ans- Two congruent figures are always similar

Q.30 The solution of the pair of linear equations x= -5 and y = 6 is
Ans- (-5,6)

Q.31  A circle of radius 3 units is centered at (0,0). Which of the following points lie outside the circle?
Ans- (3,1)

Q.32 The value of k for which the pair of linear equations 3x + 5y = 8 and kx + 15y = 24 has infinitely many solution is?

Ans- 9

Q.33  HCF of two consecutive even number is
Ans- 2




CBSE Answer Key: 10th Maths Term 1 CBSE Board Exam 2021-22 (Basic)

Answer 1: (a)
Answer 2: (c)

Answer 3: (b) 
Answer 4: (d)
Answer 5: (a)

Answer 6: (b)
Answer 7: (c)

Answer 8: (b)
Answer 9: (d)
Answer 10: (d)
Answer 11: (c)
Answer 12: (b)

Answer 13: (d)
Answer 14: (a)
Answer 15: (b)
Answer 16: (c)
Answer 17: (c)

Answer 18: (b)
Answer 19: (c)
Answer 20: (a)

Answer 21: (d)
Answer 22: (b)
Answer 23: (b)
Answer 24: (c)
Answer 25: (a)

Answer 26: (d)
Answer 27: (b)
Answer 28: (c)
Answer 29: (a)
Answer 30: (a)

Answer 31: (d)
Answer 32: (b)
Answer 33: (c)
Answer 34: (a)
Answer 35: (c)

Answer 36: (d)
Answer 37: (b)
Answer 38: (a)
Answer 39: (d)
Answer 40: (b)

Answer 41: (c)
Answer 42: (b)
Answer 43: (c)
Answer 44: (b)
Answer 45: (b)


Q.No. Ans.

1 a 16 c 31 d 46 d

2 c 17 c 32 b 47 a

3 b 18 b 33 c 48 c

4 d 19 c 34 a 49 c

5 a 20 a 35 c 50 d

6 b 21 d 36 d

7 c 22 b 37 b

8 b 23 b 38 a

9 d 24 c 39 d

10 d 25 a 40 b

11 c 26 d 41 c

12 b 27 b 42 b

13 d 28 c 43 c

14 a 29 a 44 b

15 b 30 a 45 b


CBSE Answer Key: 10th Maths Term 1 CBSE Board Exam 2021-22 (Basic)

.Jagranjosh

Answer 1: (a) 4
Answer 2: (c)


Jagranjosh

Answer 3: (b) 
Answer 4: (d)
Answer 5: (a)

Answer 6: (b)
Answer 7: (c)


Answer 8: (b)
Answer 9: (d)
Answer 10: (d)
Answer 11: (c)
Answer 12: (b)Jagranjosh

Answer 13: (d)
Answer 14: (a)
Answer 15: (b)
Answer 16: (c)
Answer 17: (c)


Answer 18: (b)
Answer 19: (c)
Answer 20: (a)
Jagranjosh

Jagranjosh

Answer 21: (d)
Answer 22: (b)
Answer 23: (b)
Answer 24: (c)
Answer 25: (a)

Jagranjosh

Answer 26: (d)
Answer 27: (b)
Answer 28: (c)
Answer 29: (a)
Answer 30: (a)


Jagranjosh

Answer 31: (d)
Answer 32: (b)
Answer 33: (c)
Answer 34: (a)
Answer 35: (c)

Jagranjosh

Answer 36: (d)
Answer 37: (b)
Answer 38: (a)
Answer 39: (d)
Answer 40: (b)

Jagranjosh

Answer 41: (c)
Answer 42: (b)
Answer 43: (c)
Answer 44: (b)
Answer 45: (b)


Answer 46: (d)
Answer 47: (a)
Answer 48: (c)
Answer 49: (c)
Answer 50: (d)Jagranjosh


Post a Comment